As far as M16 and automatic fire...he said back then they loaded their 20 round mags with 18 rounds only, and the M16 on full auto would rip through a mag in the blink of an eye. The cyclic rate is something like 700rpm if I'm not mistaken, so, quite frankly that is true. He's from the era of "shot placement". Or one shot, one kill. Was not found of spraying bullets and hitting nothing. And for his age, putting 3 rounds in essentially the same hole, is one tried and true Veteran whose words I respect very much.